Questions about Swinger air shocks.

Greetings, My VT3 is fitted with a Swinger SPV air shock on
the rear. I'm curious to know how often I'm going to need to
check the pressures. The shop set the bike up when I got it
and wrote down the pressures they'd set, but when I checked
it on the weekend, they were quite a bit lower than that.
It's only had a little bit of riding since new......probably
50-60km of 'proper' offroad riding, plus a little bit of
'commuting' riding thrown in. Is this the sort of thing I
should check prior to every ride? I inspect all the obvious
stuff before every ride......tyre pressures, chain
condition, brakes and such.

I'm actually getting some serious withdrawl at the
moment.....my GF has been sick with the flu, so we haven't
been for a ride in over a week!! Hate that
:-(

MrBonk www.mrbonk.com

"Rural QLD CC" <ruralqldcc@NOSPAMiinet.net.au> wrote in message
news:40f1fd52$0$1270$5a62ac22@per-qv...1.iinet.net.au...
> Greetings, My VT3 is fitted with a Swinger SPV air shock
> on the rear. I'm curious to know how often I'm going to
> need to check the pressures.
The
> shop set the bike up when I got it and wrote down the
> pressures they'd
set,
> but when I checked it on the weekend, they were quite a
> bit lower than
that.

With most pumps when you check the pressure, some air
escapes into the chamber of the pump giving a lower pressure
reading. Bit like the rule in science that says whenever you
subject something to testing the results will always be
skewed by the act of testing itself. Theres probably a
catchy name for it but I forget.

Steve.

On 2004-07-12, spademan o---[) * penned:
>
> With most pumps when you check the pressure, some air
> escapes into the chamber of the pump giving a lower
> pressure reading. Bit like the rule in science that says
> whenever you subject something to testing the results will
> always be skewed by the act of testing itself. Theres
> probably a catchy name for it but I forget.
>

Heisenberg Uncertainty Principle:

http://www.aip.org/history/heisenberg/p08.htm

--
monique

spademan o---[) * wrote:
> "Rural QLD CC" <ruralqldcc@NOSPAMiinet.net.au> wrote in
> message news:40f1fd52$0$1270$5a62ac22@per-qv1-newsreader-
> 01.iinet.net.au...
>> Greetings, My VT3 is fitted with a Swinger SPV air shock
>> on the rear. I'm curious to know how often I'm going to
>> need to check the pressures. The shop set the bike up
>> when I got it and wrote down the pressures they'd set,
>> but when I checked it on the weekend, they were quite a
>> bit lower than that.
>
> With most pumps when you check the pressure, some air
> escapes into the chamber of the pump giving a lower
> pressure reading. Bit like the rule in science that says
> whenever you subject something to testing the results will
> always be skewed by the act of testing itself. Theres
> probably a catchy name for it but I forget.

The technical term for this phenomenon is, "Psssssss!" (For
high pressure road tires, it's "THWAPP!!!")

Bill "pedant" S.

On Mon, 12 Jul 2004 15:41:38 +0000, S o r n i wrote:

> The technical term for this phenomenon is, "Psssssss!"
> (For high pressure road tires, it's "THWAPP!!!")

Ah, so that 'thwapp, thwapp, thwapp' noise was just you
having issues with road tyres... ;0p

In article <slrncf5baj.pc1.spam@home.bounceswoosh.org>,
spam@bounceswoosh.org says...
> Subject: Re: Questions about Swinger air shocks. From:
> "Monique Y. Mudama" <spam@bounceswoosh.org> Newsgroups:
> alt.mountain-bike
>
> On 2004-07-12, spademan o---[) * penned:
> >
> > With most pumps when you check the pressure, some air
> > escapes into the chamber of the pump giving a lower
> > pressure reading. Bit like the rule in science that says
> > whenever you subject something to testing the results
> > will always be skewed by the act of testing itself.
> > Theres probably a catchy name for it but I forget.
> >
>
> Heisenberg Uncertainty Principle:
>
> http://www.aip.org/history/heisenberg/p08.htm
>
> --
> monique
>
>

That was before Heisenberg compensators.
--
_________________________
Chris Phillipo - Cape Breton, Nova Scotia http://www.ramsays-
online.com